Tube-flanging tool



sept. 22, 1931'. W H, BURT 1,823,966

TUBE FLANGING TOOL Filed Jan? 5, 1950 Patented Sept. 22, 1931 Urrea WILLIAM H. BURT, OF .waTERBvRncommons@ Assieme mo me' CHASE com- PANIES, INcoR-POBATED, or-WATERBURY, coNNEcTIcUT. a conPoRA'rIoN Applieatm mea"January 3,1930. seriai'No. 418,200.

This invention relates to kan vimprovement in Hanging-tools 4for forming yflange-s upon the ends of tubes or pipes of malleable metal, such as copper, lead, etc.

The main object of this inventionf'is toprovide a simple and convenient tool of the type referred to characterized by itscapacity for being readily converted tojilangetubes 01' pipes of various diameters, whereby a flanging outitmay be provided at aflowf'cost lfor manufacture and with minimum bulk; and weight for Hanging tubesor pipes ofvarious diameters. f i .A .A y

With the above and. other objects yin'view as will' appear from the following', myinvention consists in a tubelflanging tool-having certain details of `construction'andt com'-` binations of parts as will be hereinafter described and particularly recitedjri-n`f 1 the claims. i'

In the accompanyingfdrawings:-, Y; f

Fig. 1 is an end view of one form whichy flanging-tool constructed in accordance with my invention may assume; f

Fig. 2 is a view thereof in side elevation; Fig. 3 is a view thereof in central longitudinal section; i Fig. 4 is a view thereof in transverse section on the line 4 4 of Fig. Y3; 1

Fig. 5 is a view corresponding to Fig. 3 but showing a tube sleevedl over thepilot and flangediby engagement with the deflect# ing-surface of the'mand-relLmember; f',

Figs. 6, 7 8 and 9 are correspondingviews inside elevationl illustrating. a series'ofin.- terchangeable mandrel-members capable of being organized with the body-member .to adapt the tool to flange 'tubes of various diameters; and' Fig. 10 is a central, longitudinal5rv sectional view of anotherV form 'which myinventio'n may assume. y Y

In carrying outmyinventionuas. shown in Figs. 1 to 9 inclusive, I employa relativelyf heavy body-member 10` formed in itslford .conical .i Hange-stop ward end with a airially-arranged D .socket 11 intersectingranV annular flaring or f surface 12 opening through the forwardfe'nd of said bodymember. f

The end ofthe body-member 10 opposite theg'langestopsurface 12 above described is provided with av head '13, designed .to be i struck bya hammer or mallet for .the purpose as will hereinafter appear... ,y l

In connection.y with the `body-rnember 10 aboveV described,.;I employ al series'lfxour, more'or less)Y ofima-ndrel-.members .14?, 14", 111c andltd, (called'generally 14) rcorresponding in general .form theu'gh differentiated in size and each comprising a shank 15 adapted tol snugly fit the soclretfll of thevbovdy-memf ber, an axial pilot .16, and an annularkconical deflecting-siirface` 17 interposed `between the vshank 15 and pilot 16 and diverging-from the drawings. Y 4 fl Themandrel-members 1421412 141's and 14d base of the latter, as clearly Yshown in the corresjtond to each other with thetwo eXceptions that their respective annular deflectingsurfaces 17 are of different lengthl and their respective pilots 16are of different diameters to adapt them to act toiiange tubes of various diameters. Ii`or -.instance1 as herein. shown, the mandrel-member Mahas `the diameter of its pilot 16 proportioned to snugly .iit thefin.- terior of a tube of diameter and-its deflecting-surface 17 of Athe proper length. to provide al flange lof suitable length for that 'diameter of tube. l Similarly themandrelmemberslll", 111c and 14dhave the diameters of their respective pilots. 16 and the length of their respective' deflecting-surfaces 17f proportioned to coact with tubes of 1/2?, 1% and 1 diameters respectively. y y. -To provide for yieldingly holding any givenone ofthe mandrel-members 14e, 141" 14 and llldin coacting .position with respectto Vthe body-member, I form=the shank 15 of each of the p said mandrel-members with. an

annular groove 18 which is adapted to be entered by a ball-catch 19 located in a radial socket 20 formed in the said body-member and extending between the axial socket 11 and the outer periphery of the same. The said socket 20 is formedat its outer end with a retaining-shoulder 21 against which is seated the outer end of a. short helical spring 22 nterposed between the said shoulder and the outer face of the ball-catch 19 so as to constantly urge the. same inward into engagement with the annular groove 18' of the particular mandrel-member at the time installed in the socket 11. To limit they inward movement of the ball-catch V19 so as to-preventthe r spring 22 from forcing the same into the socket 11 when no mandrel is in place therein.

inthe socket 11 of the body-member, and have also shown bybroken lines, the `remaining mandrel-membersl 14", 14Cc and 14d installed in the said body-member and itv will be noted by referencey to thefsaid figure that the flangestop surface'12 is" ada ted to function to. limit the flaring' action of t e deflecting-surface17 upon a tube such as 24 (Fig. 5) when the end of the. same is 'flared outward `by the deflecting-surface of any given oneQof the mandrelmembers to'form a flange 25t Y 'In lthe use of the form off my invention illustrated in Figs'. 1 to 9 inclusive, the first step isl to select from the set'the 'proper size mandrel-member M for the particular size of tube Whichit is; desired to. flange or Hare and to organize the mandrel-member so selected with the body-member 10. This may be readily done by inserting the shank 15 of the appropriate mandrel-member into the socket 11 ofthe body 10 to seat it against the bottom of the said socket and engage its annular groove 18 with the ball-latch 19 so that the two said members are united with capacity for ready separation.`

The pilot 16 of themandrel-member 14 so selected and installed is now axially inserted in a tube such as 24,after,which hammer or mallet blows uponthe head 13 of the ,bodymember will' serve to drive'the defi'ectingsurface 1 7 into engagement vwith the end of the tube to outwardly ldeflect the same to form a iiange25. The, driving of the tool into the tube is continued until the` edge of the flange 25 thereof firmly abuts against the conical flange-stop surface 12 of' the body-v member which serves tolimit anddetermine the degree to Whichthe end of any given size of tube maybe flanged or flared.;

In the form of my invention 'shown in Fig. 10, instead of providing thebody-memberl 1'() with a continuous conical flange-stop surface 12, Iy substitute therefor a series of annular flange-stop shoulders 26 (three, more or question.

less) extending substantially parallel with the axis of the body-member and of difi'erent diameters, as clearly shown in Fig. 10.

The flange-stop shoulders just above reerred to are separated fromveach other by annular seats 27 arranged in a plane transverse to the axis of the tool and adapted to be engaged by the underface 28 of an annularfiange 29 extending around each of the mandrels of the set with the exception of the smallest size 14a. Y

The Hanging-tool illustrated in Fig. 10 may be used in the same manner as the form used in Figs. 1 to 9 inclusive, i.` e., after the appropriate size mandrel-member. 14 'has been installed in thebody-member 10, the

pilot 16 is. entered into the end of the tube to be flanged and driven home by blows upon the head 13 of the. body-member until the edge of the flange 25 of the tube abuts against the particular annular flange-stop shoulder 26 Y complementing the mandrel-member in While I have herein shown and described the mandrel-members 14 as retained in place in thefbod-y-member by a yielding' ball-latch 19, it will be apparent without further illustration that my invention comprehends other modes of securing the parts together.

I wish to call attention to the tact that the angle of the defi'ecting-surfaces 17 of the mandrel-members with respect to the axis of the same may vary Widely to meet different requirements, and I wish to` have it understood, therefore, that my invention is not limitedto. the inclination of the said deflecting-surfaces to Aproduce an obtuse-angled fiangeupon tubes. y It will be seen from the foregoing that by employing a body-member having a socket anda series of linterchangeable mandrelmembers capable of being organized with the said body-member, I provide a flanging outfit of minimum bulk and weight, which will be conveniently converted to accurately fiange or; flare the ends of tubes of various diameters.

I claim:

1.y vIn a Hanging-tool, the combination with a body-member provided in one end with a mandrel-receiving socket and with an annular {lange-stop surrounding the open mandrel-receiving end'ef the said socket; of a removable mandrel-member provided. Vat one end with a shanky adapted to fit into the socket in the said body-member,l at its opposite end lwith af pilot projecting voutward from the open end of the said socket and intermediate its ends with an annular deliecting-surface divergingk vfrom the base ofthe said pilot and ypositionedse as to defiect the' end of a tube againstI the annular flange-stop of' the Vsaid body-membe`r the said body-member, stopliange and mandrel-member being organized together in a manner to provide for their beiso ing concurrently driven toward the end of a tube.

2. In a Hanging-tool, the combination with a body-member provided in one end with a mandrel-receiving socket and With an annular flange-stop surrounding the open mandrel-receiving end or" the said socket; of a removable mandrel-member provided at one end With a shank adapted to fit into the socket in the said body-member, at its opposite end with a pilot projecting outward from the open end of the said socket, and intermediate its ends with an annular transverse flange having its outer face inclined Withrespect to the aXis of the said pilot and diverging from the base thereof and positioned so as to defiect the end of a tube against the annular flange-stop of the said body-member; the said body-member, stop-flange and mandrelmember being organized together in a manner to provide for their being concurrently driven toward theend of a tube.

3. A flanging-tool having a body-member.

provided in one end With a mandrel-receiving socket and with an annular flange-stop surrounding the open-mandrel-receiving end of the said socket which latter is adapted to receive any one of a plurality of interchangeable mandrel-members each characterized by being provided at one end with a shank adapted to lit into the socket in the said bodymember, at its opposite end with a pilot projecting out-Ward from the Vopen end of the said socket, and intermediate its ends With an annular defiecting-surface diverging from the base of the said pilot and positioned with respect to the said shank so as to deflect the f end of a tube against the annular flange-stop of the said body-member; the said body-member, stop-flange and mandrel-member being organized together in a manner to provide for their being concurrently driventoward the end of a tube. Y

4. In a flanging` tool. the combination with a body-member provided with an axial mandrel-receiving socket having a bottom-Wall and opening through one end of the said body-member and With anannular flangestop surrounding the open end of the said socket; of a mandrel-member provided at one end with a shank adapted to fit into the open mandrel-receiving end of the socket in the said body-member, at its opposite end With a pilot project-ing outvvard from the open end of the said socket, and intermediate its ends With an annular deflecting-surface diverging from the base of the said pilot and positioned to deflect the end of a tube against the annular flange-stop of the said body-member; the said body-member, stop-fiange and mandrel-member being organized together in a manner to provide for their being concurrently driven toward the end of a tube.

5. In a Hanging-tool, the combination lvvitli'a.body-inembeii'formed in one end With a mandrel-receiving vsocket andwith an an- ;nulavzflangefstop surrounding the open end foi thesaid 'socket g'of a mandrel-member provided atone end VWith a'shankada'pted to fit into the socket in the said body-member and provided ivithf anf, annular groove, provided at its opposite yend `-Withfa, pilot, and 'intermediate' its ends With' an Aannular deflectingsurface diverging from the base of thesaid 'pilot/and"positionedfto deflect theend of a the socket in the said body-member, at its` opposite end with a pilot projecting outward from the open end of the said socket, and intermediate its ends With an annular deiiecting-surface diverging from the base of the said pilot and positioned to deflect the end of a'tube against the annular conical flange-stop of the said body-member; the

said body-member, stop-flange and inandrelmember being organized together in a manner to provide for their being concurrently driven towardthe end of a tube.

7. In a flanging-tool, the combination with a body-member provided in one end With a mandrel-receiving socket and with an annular flange-stop surrounding the open imandrel-receiving end of the said socket; of a mandrel-member provided at one end With a shank adapted to fit into the socket in thesaid body-member, at its opposite end With a pilot projecting outward from the open end ofk the said socket, and intermediate its ends with a conical annular deflecting-surface diverging from the base of the Saidv pilot and positioned to deflect the end of a tube against the annular flange-stop of the said body-member; the said body-member, stop-fiange and mandrel-member beingorganized together in a lmanner to provide for.

their being concurrently driven toward the end of a tube.

8. In a Hanging-tool, the combination with ka body-member provided in one end with a mandrel-receiving socket and with an annular conical fiange-stop surrounding the open mandrel-receiving end ot' the said socket; of a mandrel-member provided at one end with a shank adapted to fit into the socket in the said body-member, at its opposite end. With a pilot projecting outward from the4 open ,end of. the said socketk and intermediate its ends with a conical annular deectngsurface diverging fromthe base. of the said .pilot and positonedso as to deectthe end of a tube againstthef ann-alan conical Hangestop of the said body-.member f the sadbodymem-bor, stop-flange and mandrehmember Y.being organized together in a manner to pro- .vlde for thelr bemg concurrently 'dmven to- !Wardthe` end of a, tuba In testimony whereof, I havey signed this specification.

WLLIAM H. BURT. 

